Surgical suture. Surgical suture is a medical device used to hold body tissues together after an injury or surgery. Application generally involves using a needle with an attached length of thread. A number of different shapes, sizes, and thread materials have been developed over its millennia of history.
Parentheses or round brackets, denoted by '( )', is generally used to define the different precedence of numbers in a mathematical expression. Box brackets or square brackets: Apart from mathematical expression, '[ ]' square brackets are also used to represent the numbers in interval.
For other uses, see ( ) (disambiguation). A bracket is a tall punctuation mark typically used in matched pairs within text, to set apart or interject other text. The matched pair may be described as opening and closing, or left and right symbols. Forms include round (also called parentheses), square, curly (also called braces), and angle brackets; and various other pairs of symbols.